Notifications for Clone quick_action

Adds email notifications for the new Clone quick-action

app/helpers/notify_helper.rb

@@ -5,7 +5,7 @@ module NotifyHelper
     link_to(entity.to_reference, merge_request_url(entity, *args))
   end
 
-  def issue_reference_link(entity, *args)
-    link_to(entity.to_reference, issue_url(entity, *args))
+  def issue_reference_link(entity, *args, full: false)
+    link_to(entity.to_reference(full: full), issue_url(entity, *args))
   end
 end

app/mailers/emails/issues.rb

@@ -80,6 +80,16 @@ module Emails
       mail_answer_thread(issue, issue_thread_options(updated_by_user.id, recipient.id, reason))
     end
 
+    def issue_cloned_email(recipient, issue, new_issue, updated_by_user, reason = nil)
+      setup_issue_mail(issue.id, recipient.id)
+
+      @author = updated_by_user
+      @issue = issue
+      @new_issue = new_issue
+      @can_access_project = recipient.can?(:read_project, @new_issue.project)
+      mail_answer_thread(issue, issue_thread_options(updated_by_user.id, recipient.id, reason))
+    end
+
     def import_issues_csv_email(user_id, project_id, results)
       @user = User.find(user_id)
       @project = Project.find(project_id)

app/services/notification_service.rb

@@ -504,6 +504,16 @@ class NotificationService
     end
   end
 
+  def issue_cloned(issue, new_issue, current_user)
+    recipients = NotificationRecipients::BuildService.build_recipients(issue, current_user, action: 'cloned')
+
+    recipients.map do |recipient|
+      email = mailer.issue_cloned_email(recipient.user, issue, new_issue, current_user, recipient.reason)
+      email.deliver_later
+      email
+    end
+  end
+
   def project_exported(project, current_user)
     return true unless notifiable?(current_user, :mention, project: project)
 

app/views/notify/issue_cloned_email.html.haml

+- author_link = link_to @author.name, user_url(@author)
+- if @can_access_project
+  - string = _("%{author_link} cloned %{original_issue} to %{new_issue}.").html_safe
+- else
+  - string = _("%{author_link} cloned %{original_issue}. You don't have access to the new project.").html_safe
+%p
+  = string % { author_link: author_link, original_issue: issue_reference_link(@issue), new_issue: issue_reference_link(@new_issue, full: true) }

app/views/notify/issue_cloned_email.text.erb

+Issue was cloned.
+
+<% if @can_access_project %>
+  New issue location:
+  <%= project_issue_url(@new_issue.project, @new_issue) %>
+<% else %>
+  You don't have access to the project.
+<% end %>

changelogs/unreleased/9421-clone-quickaction-notifications.yml

+---
+title: Added email notifications when an Issue is cloned
+merge_request: 48534
+author:
+type: added

locale/gitlab.pot

@@ -359,6 +359,12 @@ msgstr ""
 msgid "%{anchorOpen}Learn more%{anchorClose} about how you can customize / disable registration on your instance."
 msgstr ""
 
+msgid "%{author_link} cloned %{original_issue} to %{new_issue}."
+msgstr ""
+
+msgid "%{author_link} cloned %{original_issue}. You don't have access to the new project."
+msgstr ""
+
 msgid "%{author_link} wrote:"
 msgstr ""
 

spec/services/notification_service_spec.rb

@@ -1549,6 +1549,37 @@ RSpec.describe NotificationService, :mailer do
       end
     end
 
+    describe '#issue_cloned' do
+      let(:new_issue) { create(:issue) }
+
+      it 'sends email to issue notification recipients' do
+        notification.issue_cloned(issue, new_issue, @u_disabled)
+
+        should_email(issue.assignees.first)
+        should_email(issue.author)
+        should_email(@u_watcher)
+        should_email(@u_guest_watcher)
+        should_email(@u_participant_mentioned)
+        should_email(@subscriber)
+        should_email(@watcher_and_subscriber)
+        should_not_email(@unsubscriber)
+        should_not_email(@u_participating)
+        should_not_email(@u_disabled)
+        should_not_email(@u_lazy_participant)
+      end
+
+      it_behaves_like 'participating notifications' do
+        let(:participant) { create(:user, username: 'user-participant') }
+        let(:issuable) { issue }
+        let(:notification_trigger) { notification.issue_cloned(issue, new_issue, @u_disabled) }
+      end
+
+      it_behaves_like 'project emails are disabled' do
+        let(:notification_target)  { issue }
+        let(:notification_trigger) { notification.issue_cloned(issue, new_issue, @u_disabled) }
+      end
+    end
+
     describe '#issue_due' do
       before do
         issue.update!(due_date: Date.today)